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Conditions at Steamer Lane in September
September: Autumn Stirrings
September marks the first noticeable uptick of the new season. Average swell height rises to 1.5m (5ft) and period extends to 11.8s as the North Pacific begins sending stronger, more organised pulses. WNW still rules (53.7%), followed by W (26.9%) and WSW (10.7%), and the upper end of the size range becomes more populated than in August. Wind remains superb - ideal 90% of the time - with NW flow (17.7%) and WNW (25.6%) keeping conditions clean, while lighter W (23.8%) and WSW (13.7%) flow adds occasional texture. Rain is still minimal (0.11mm/day), air temps are a warm 18°C, and water temperature reaches its seasonal peak at 13.6°C. The first proper swells of autumn, perfectly groomed, make this one of the sleepers of the year.
Average Spot conditions at Steamer Lane in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Steamer Lane during September. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Steamer Lane for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Steamer Lane for September. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Steamer Lane.